August kaiser



(No Model.)

A KAISER PENCIL $HARPENEE. V

' Patented June 16, 1896.

NITED STATES PATENT 'FFICE.

AUGUST KAISER, OF NENV YORK, N. Y.,. ASSIGNQR TO THE EAGLE PENCILCOMPANY, OF SAME PLACE.

PENCIL-SHARPENER.

SPECIFICATION forming part of Letters Patent No. 562,303, dated June 16,1896..

Application filed April 1 l l 8 9 6.

T at whom, it may concern.-

Be it known that 1, AUGUST KAISER, of the city, county, and State of NewYork, have i11- vented certain new and useful Improvements inPencil-Sharpeners, of which the following is a specification.

Under my invention the operation of sharpening the pencil involves thecutting away of the sheath at its rear and not at its point. The lead ismovable in the sheath, and as the sharpener cuts away the rear end ofthe wood it causes the lead'point to protrude from the front end of thepencil a distance corresponding to the length of the cut-away part ofthe sheath. The advantages of this arrangement are that the pointedfront end of the sheath remains the same and is never cut away orrenewed and that the cutting edges of the sharp ener are never by anypossibility brought into contact with the lead, thus avoiding both thedulling of the instrument occasioned by cutting the lead, as well as thebreaking of the lead itself, which often results from its contact withthe cutting-blade of the instrument.

In the accompanying drawings, to which I shall now refer for a morecomplete understanding of my invention, Figure 1 is a perspective viewof the pencil and pencil-sharpener complete. Fig. 2 is a longitudinalaxial section of the same.

The sheath A of the pencil is made of wood or other suitable materialthat can be readily cut with a knife. It contains the lead stick or coreB, which is longitudinally movable therein, fitting the hole in thestick snugly, so that it cannot move very readily therein. To increasethe friction between the lead and its sheath, the latter is providedwith a frictional clamping-sleeve a of rubber, which clasps the portionof the lead passing through it.

The sharpener, mounted on the rear end of the pencil, comprises a sleeve0, having a split front end, forming spring clamping-jaws c, whichembrace the pencil closely and prevent the instrument from being tooreadily moved lengthwise upon the pencil. The friction at this point aswell as at the front end of the Serial No. 587,149. (No model.)

pencil is intended to prevent the lead from being pushed back into thesheath by the pressure which comes on its point when in use. i Thesleeve contains a pencil cutter or sharpener proper, D, of any approvedconstruction, (shown partially through the opening 0 in Fig. 1,) cut inthe sleeve to afford an exit for the shaving cut from the rear end ofthe pencil-sheath by the blade at of the sharpener, when the sleeve 0 isrevolved and at the same time pressed forwardupon the pencil-sheath. Arigid central stem 6, suitably held in place in the sleeve, projectsaxially into the taper rear end of the sharpener in position to enterthe lead-hole in the sheath and bear upon the rear end of the leadtherein, as indicated plainly in Fig. 2. Thus as the rear end of thepencil is cut away the stem or pusher e shoves the lead forward andcauses its front end to project from the pencil point or tip. Thecutter, it will be noted, is out of contact at all times with the lead.The pusher e in the arrangement shown in the drawings is fast to a diskor button c, secured in the rear end of the sheath, which also containsan erasive rubber head or stick f.

Having described my invention and the best way now known to me ofcarrying the same into effect, what I claim herein as new and of my owninvention isl. A pencil-sharpener in which the cuttingblade and conicalor tapering receiving-passage for the end of the pencil, are combinedwith a pusherstem projecting from the smaller end of the sharpeneraxially into the interior of the bore or passage in position to enterthe central lead-receiving hole or passage in the pencil substantiallyas and for the purposes hereinbefore set forth.

2. A pencil-sheath and 1011 gitudinally-movable lead therein,incombination with a sharp- 9o ener mounted and frictionally held upon therear end of the sheath, and capable of both rotary and longitudinalmovement thereon, and a pusher carried by said sharpener, and adapted toenter the central lead-passage in 5 the sheath, and to bear upon the endof the lead therein, substantially as and for the purposes hereinbeforeset forth.

3. In combination, a pencil-sheath, a lead tially as and for thepurposes hereinbefore set longitudinally movable therein; a sharpenerforth. 10 or cutter mounted upon the rear end of the 111 testimonywhereof I have hereunto set sheath, and capable of both rotary and lonmyhand this 10th day of April, 1896.

5 gitudinal movement thereon; and means ear- AUGUST KAISER.

ried by the sharpener or cutter whereby the WVitnesses: lead in thesheath is advanced in proportion SAMUEL KRAUS,

as the sheath at its rear is cut away, substan- P. H. BUCKMASTER.

